Electrical outlet-box and the like.



A. MGMURTRIB. ELECTRICAL OUTLET BOX AND THE LIKE. APPLICATION FILED JAN.15,1906.

Patented July 28, 1914.-

. tion, in connection with the accompanying- UNITED STATES"OFF1E.

ADNAH mmunrmn, or NEW You N. 'Y., AssIGNon-To 'rnomrs c BET-TS corneas 2:,

or new YORILN. Y., A- conronarxon or NEW YORK.

nnnc'rmcan ma ma: AND THE LIKE.

Specification of Letters Patent. Patented J l 28 191.

Application filed Iqnua 1a, woe. Serial No. 296,037.

To all whomit may concern:

Be it known that-I, ADNAH MCMURTRIE, of New York, N. Y., have invented certain Improvements in Electrical Outlet-Boxes and the like, of which the following descripdrawings, is a specification, like letters on the drawings designating like parts.

This invention relatesto outlet boxes'or the like of a specialaltility in electrical conduit systems, although I contemplate the use of my improvements in any field to which they may be adapted by reason of the nature of my improvements, which have for their principal object means to enable the adjustable attachment of si'fch boxes to I beams or similar structural members whether horizontal or upright. I prefer to embody the attaching means in a unitary construction with such; boxes, sov that the boxes may be secured in place without drilling holes in the I beams to enable fastening of the boxes thereto by bolts or their equivalent, and the various features by which I provide for such adjustable attachment will be illustrated and described fully-in the accon'ipanying drawing and specification and pointed out in the claims.

mInthe drawings, Figure 1 illustrates in rear elevation an outlet box for electrical conduitjn the construction of which my improvementshave been embodied. Fig. 2

illustrates a modification thereof, while Fig. 3 is a'view in section, partly in'elevation, showing the box of Fig. 1 in place.

In the embodiment of my invention selected for illustration and description as a con vemcnt form to enable a ready and complete understanding of my improvements, the

part designated by the reference numeral 1 (in Figs. 1 and'3) is the bottom of what may be considered an outlet box, which may be formed of any usual or convenient shape or material, such-as iron or steel, and will have. in accordance with my invention means to enable-the attachment of fastening devices such as the sliding clamps 2, slotted at 3 to receive set bolts 4 with nuts 5, the specific construction of which may vary without departing from the spirit of my invention. For the sake of convenience I prefer to provide ribs or guides 6, integral with the material ofthe: box,.'between.which the clamps will slide, and there may be any desired nudiber or arrangement ot the 5s clamps and their seats, of which four are shown in' Flg. 1. Usuallythe clamps on only two opposite sides will be in'use, but I provide four, both to. enable the box to be turned side for side and to present a bottom surface which will not permit tipping of the box when it rests against the flat surface of the I beam or other sup ort. It is desirable to provide for turning t jbox side for side,

as the respective sides 7 are usually provided with a different number of apertures for conduit, and if the. side having two apertures is to be turned toward a direction from which two pipes run, my arrangement of the clamps will permit this to be done readily, and similarlya side having three apertures may be located in any desired position.

In Fig. 2, the box 8 is round, and has clamp members 9, 10, 11, 12'like those already described, but; at -13 I have shown a clamp member integral with the material of the device. At 14 ii similar hook is pro vided to engage a flange, the set screw 15, mounted in apost 16, serving to secure the box in place.

'hat I claim as newand desire'to secure justed position.

2. The combination with an electrical conduit member of the nature of an outlet box, of adjustable clamping means, to enable ad justable attachment of said box to a suitable support, said clamping means compris- 1,1os,2a4 v ing a. lfixedk'rlfiping abutmnt formed in- York and State of New York this 27 th day telgr llr iifl said-box to engabge one portion of December A. D. 1905. 0; said support ahd'a muva 10 member to engage another portion of sand support and ADNAH. MCMURI secure said box lhereto, substantially as de- Wi tnesses: wribei- ALEXANDER C. PROUDF1T, Signed at New York in the county of New WM. H. MOCORMICK. 

